Look, I've been crunching numbers all morning on this Rays-Red Sox matinee, and something's not adding up with this total. The books opened at 8, but I'm seeing serious value on the under at 7.5.
Here's what caught my eye: afternoon games at Fenway historically trend under, especially in May when the wind patterns off the harbor can wreak havoc on fly balls. Both these clubs have been grinding out low-scoring affairs lately, and day games after night games? That's when offenses typically look sluggish.
The Red Sox being favored at -156 feels about right given home field, but that 1.5 run spread tells me Vegas expects a tight contest. When games project close, totals often come in lower than the market anticipates.
Tampa Bay's approach has always been methodical – they work counts, burn through bullpens, but don't always capitalize with big innings. Boston's offense can explode, sure, but they've been inconsistent enough that I'm not buying into an 8-run expectation.
The math says this stays under. I'm not promising anything – baseball's too weird for guarantees – but when the models align with situational factors like this, I pay attention. Taking under 7.5 and feeling confident about the logic, even if the baseball gods have other plans.
| Sportsbook | Spread | Total | Moneyline |
|---|---|---|---|
| DraftKings | Boston -1.5 (141) | O/U 8 | Boston -156 / Tampa Bay +129 |
| FanDuel | Boston -1.5 (146) | O/U 8 | Boston -148 / Tampa Bay +126 |
| BetMGM | Boston -1.5 (140) | O/U 8 | Boston -155 / Tampa Bay +125 |
| Pinnacle | Boston -1.5 (146) | O/U 8 | Boston -140 / Tampa Bay +129 |
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Under 7.5 (confidence 60)
Tampa Bay at Boston is scheduled for Sat, May 9, 4:11 PM ET.
Boston are listed at -1.5 on the spread, with the total set at 8 and a moneyline of -156. Lines come from a five-book consensus (DraftKings, FanDuel, BetMGM, Caesars, Pinnacle) and shift up to game time.
Tampa Bay vs Boston is offered at every major US sportsbook — DraftKings, FanDuel, BetMGM, Caesars, and ESPN BET — plus the sharp book Pinnacle. Use the odds comparison table above to find the best price; lines often diverge by 5–15 cents on moneylines and a half-point on spreads.
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Generated 2026-05-09T16:03:01.604Z · Odds shift up to game time. 21+ only. Gamble responsibly. Disclaimer